Results 91 to 100 of about 658 (192)
Using the Helmert-transformation to reduce dimensionality in a mixed model: Application to a wage equation with worker and firm heterogeneity [PDF]
, 2011 A model for matched data with two types of unobserved heterogeneity is considered - one related to the observation unit, the other to units to which the observation units are matched.
Nilsen, Øivind Anti +3 more
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Camera-Based Indoor Positioning System for the Creation of Digital Shadows of Plant Layouts. [PDF]
Sensors (Basel), 2023 Hermann J +3 more
europepmc +1 more source
Analysis of coordinate transformation with different polynomial models [PDF]
, 2017 The main task of geodesy is providing geodetic networks with fixed points in order to create a uniform geographical spatial reference frame as a fundament for the data collection by the official geodesy survey institutes.
Gao, Yueqing
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Hybrid Geoid Modelling with AI Enhancements: A Case Study for Almaty, Kazakhstan
AlgorithmsDeveloping a high-precision regional geoid model is a key element in modernizing Kazakhstan’s vertical reference framework and ensuring consistent GNSS-based height determination. However, the mountainous terrain of southeastern Kazakhstan, characterized
Asset Urazaliyev +5 more
doaj +1 more source
Weighted coordinate transformation formulated by standard least-squares theory
, 2017 This paper presents a universal model of weighted coordinate transformation, i.e. transformation considering the errors of coordinates in both coordinate systems. It is intrinsically one of the typical examples of 'error-in-variables' (EIV) models.
Ž. Cvijetinović +3 more
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, 2023 Različiti terestrički referentni sustavi definirani su i korišteni zbog nekih praktičnih i povijesnih događaja u domeni geodezije. Prijelaz iz jednog sustava u drugi zahtijeva transformaciju koordinata. Helmertova transformacija najčešće je korištena kao
Sisman, Yasemin +2 more
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Sphero-Conical Modeling for the Estimation of Very Long Baseline Interferometry Invariant Point. [PDF]
Sensors (Basel), 2022 Bae TS, Hong CK.
europepmc +1 more source
ISPRS International Journal of Geo-InformationI have read the article by Ioannidou and Pantazis [...]
Sebahattin Bektaş
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A Non-Iterative Approach for Solving the Parameters of a Helmert Transformation
, 2013 不同參考坐標系統之間的轉換是應用空間資訊時常遇見的問題，其中由於線性轉換之型式較為簡易且所引進之參數具有明確之物理意義，在實務上常被廣泛使用，而相似轉換即屬線性轉換之一種，其傳統之求解方式乃是透過轉換前後之坐標值組成觀測量，以最小自乘法求得參數的最佳估值。然而利用最小自乘法求解時，會因為迭代而使解算效率降低，且參數求解時之起始值給定亦是一項問題，此外，於可及性較差之地區難以佈設控制點，若侷限於使用點位坐標作為觀測資訊，將增加轉換參數求解之困難。本研究主要目的為建立一相似轉換的非迭代解法(Non ...
Yueh, Yi-Tzen, 樂怡岑
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Tyt. z nagł.References s. 26-27.Dostępny również w formie drukowanej.ABSTRACT: The paper describes two models for determination of Helmert transformation parameters with consideration of coordinate weights as pseudo-observations in common point primary ...
Beluch, Józef.
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